/*
 * Copyright (c) 1999-2003, Carnegie Mellon University. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * 3. Products derived from the software may not be called "iVProg",
 *    nor may "iVProg" appear in their name, without prior written
 *    permission of Carnegie Mellon University.
 * 
 * 4. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes software developed by Carnegie Mellon University"
 */

package edu.cmu.cs.stage3.awt;

public class SemitransparentWindow {

 private static boolean s_successfullyLoadedLibrary;
 static {
  try {
   System.loadLibrary( "jni_semitransparent" );
   s_successfullyLoadedLibrary = true;
   //} catch( UnsatisfiedLinkError ule) {
  } catch( Throwable t) {
   s_successfullyLoadedLibrary = false;
   }
  }

 private static native boolean isSupportedNative();
 public static boolean isSupported () {
  if (s_successfullyLoadedLibrary) {
   return isSupportedNative();
  } else {
   return false;
   }
  }

 private native void createNative();
 private native void destroyNative();
 private native void showNative();
 private native void hideNative();
 private native void setLocationOnScreenNative(int x, int y );
 private native void setOpacityNative(double opacity);
 public SemitransparentWindow () {
  if (SemitransparentWindow.isSupported()) {
   createNative();
   }
  }

 //Rem @Override
 protected void finalize () throws Throwable {
  if (SemitransparentWindow.isSupported()) {
   destroyNative();
   }
  super.finalize();
  }

 public void setImage (java.awt.Image image) throws InterruptedException {
  }

 public void show () {
  if (SemitransparentWindow.isSupported()) {
   showNative();
   }
  }

 public void hide () {
  if (SemitransparentWindow.isSupported()) {
   hideNative();
   }
  }

 public void setLocationOnScreen (int x, int y) {
  if (SemitransparentWindow.isSupported()) {
   setLocationOnScreenNative( x, y );
   }
  }

 public void setOpacity (double opacity) {
  if (SemitransparentWindow.isSupported()) {
   setOpacityNative( opacity );
   }
  }

 }
